<?php
    /*********************************************************************************
     * Zurmo is a customer relationship management program developed by
     * Zurmo, Inc. Copyright (C) 2014 Zurmo Inc.
     *
     * Zurmo is free software; you can redistribute it and/or modify it under
     * the terms of the GNU Affero General Public License version 3 as published by the
     * Free Software Foundation with the addition of the following permission added
     * to Section 15 as permitted in Section 7(a): FOR ANY PART OF THE COVERED WORK
     * IN WHICH THE COPYRIGHT IS OWNED BY ZURMO, ZURMO DISCLAIMS THE WARRANTY
     * OF NON INFRINGEMENT OF THIRD PARTY RIGHTS.
     *
     * Zurmo is distributed in the hope that it will be useful, but WITHOUT
     * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
     * FOR A PARTICULAR PURPOSE.  See the GNU Affero General Public License for more
     * details.
     *
     * You should have received a copy of the GNU Affero General Public License along with
     * this program; if not, see http://www.gnu.org/licenses or write to the Free
     * Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
     * 02110-1301 USA.
     *
     * You can contact Zurmo, Inc. with a mailing address at 27 North Wacker Drive
     * Suite 370 Chicago, IL 60606. or at email address contact@zurmo.com.
     *
     * The interactive user interfaces in original and modified versions
     * of this program must display Appropriate Legal Notices, as required under
     * Section 5 of the GNU Affero General Public License version 3.
     *
     * In accordance with Section 7(b) of the GNU Affero General Public License version 3,
     * these Appropriate Legal Notices must retain the display of the Zurmo
     * logo and Zurmo copyright notice. If the display of the logo is not reasonably
     * feasible for technical reasons, the Appropriate Legal Notices must display the words
     * "Copyright Zurmo Inc. 2014. All rights reserved".
     ********************************************************************************/

    /**
     * A job for processing autoresponder messages that are not sent immediately when triggered
     */

    class AutoresponderQueueMessagesInOutboxJob extends AutoresponderOrCampaignBaseJob
    {
        /**
         * @see BaseJob::$loadJobQueueOnCleanupAndFallback
         * @var bool
         */
        protected static $loadJobQueueOnCleanupAndFallback = true;

        /**
         * @returns Translated label that describes this job type.
         */
        public static function getDisplayName()
        {
           return Zurmo::t('AutorespondersModule', 'Process autoresponder messages');
        }

        /**
         * @see parent::resolveJobsForQueue()
         */
        public static function resolveJobsForQueue()
        {
            parent::resolveJobsForQueue();
            $pageSize       = static::JOB_QUEUE_PAGE_SIZE;
            $offset         = 0;
            $timeStamp      = time();
            do
            {
                $autoresponderItems = AutoresponderItem::getByProcessedAndProcessDateTime(0, $timeStamp,
                                                            $pageSize, $offset, false);
                $offset    = $offset + $pageSize;
                if (is_array($autoresponderItems) && count($autoresponderItems) > 0)
                {
                    foreach ($autoresponderItems as $autoresponderItem)
                    {
                        Yii::app()->jobQueue->resolveToAddJobTypeByModelByDateTimeAttribute($autoresponderItem, 'processDateTime',
                                                'AutoresponderQueueMessagesInOutbox');
                    }
                }
            }
            while (is_array($autoresponderItems) && count($autoresponderItems) > 0);
        }

        /**
         * @see BaseJob::run()
         */
        public function run()
        {
            $processed = $this->processRun();
            $this->forgetModelsWithForgottenValidators();
            $this->modelIdentifiersForForgottenValidators = array();
            return $processed;
        }

        protected function processRun()
        {
            $batchSize                   = $this->resolveBatchSize();
            if ($batchSize != null)
            {
                $resolvedBatchSize = $batchSize + 1;
            }
            else
            {
                $resolvedBatchSize = null;
            }
            $autoresponderItemsToProcess = AutoresponderItem::getByProcessedAndProcessDateTime(0, time(),
                $resolvedBatchSize);
            $startingMemoryUsage = memory_get_usage();
            $modelsProcessedCount = 0;
            foreach ($autoresponderItemsToProcess as $autoresponderItem)
            {
                try
                {
                    $this->processAutoresponderItemInQueue($autoresponderItem);
                }
                catch (NotFoundException $e)
                {
                    return $autoresponderItem->delete();
                }
                catch (NotSupportedException $e)
                {
                    $this->errorMessage = $e->getMessage();
                    return false;
                }
                $this->runGarbageCollection($autoresponderItem);
                $modelsProcessedCount++;

                if ($this->hasReachedMaximumProcessingCount($modelsProcessedCount, $batchSize))
                {
                    Yii::app()->jobQueue->add('AutoresponderQueueMessagesInOutbox', 5);
                    break;
                }
                if (!Yii::app()->performance->isMemoryUsageSafe())
                {
                    $this->addMaximumMemoryUsageReached();
                    Yii::app()->jobQueue->add('AutoresponderQueueMessagesInOutbox', 5);
                    break;
                }
            }
            $this->addMaxmimumProcessingCountMessage($modelsProcessedCount, $startingMemoryUsage);
            return true;
        }

        protected function processAutoresponderItemInQueue(AutoresponderItem $autoresponderItem)
        {
            AutoresponderItemsUtil::processDueItem($autoresponderItem);
        }

        /**
         * Not pretty, but gets the job done. Solves memory leak problem.
         * @param AutoresponderItem $autoresponderItem
         */
        protected function runGarbageCollection($autoresponderItem)
        {
            assert('$autoresponderItem instanceof AutoresponderItem');
            $autoresponderItem->autoresponder->marketingList->forgetValidators();
            $autoresponderItem->autoresponder->forgetValidators();
            $this->modelIdentifiersForForgottenValidators[$autoresponderItem->autoresponder->marketingList->getModelIdentifier()] = true;
            $this->modelIdentifiersForForgottenValidators[$autoresponderItem->autoresponder->getModelIdentifier()] = true;
            parent::runGarbageCollection($autoresponderItem);
        }
    }
?>